Britney Spears posted this image on Twitter with the caption: "Getting ready for some pool time! Having a blast xxoo" Credit: Britney Spears/Twitter

Paulina Gretzky, the lingerie-wearing, nightclubbing, poolside-prancing daughter of Wayne posted a photo of herself on Twitter in an itsy-bitsy teeny-weeny green bikini Tuesday (July 10, 2012), with the caption "Fun day on set of Grown Ups 2 with @KimberlyAlexisH."

Beau Smart posted this image with Jennifer Lopez (who recently exited American Idol) with the caption: "Me and the Bear wake-boarding in Long Beach... Got up her 1st try.." Credit: Beau Smart/Twitter

Kim Kardashian tweeted this photo of herself on July 11, 2012, with the caption: "Sunrise summertime shoot! ‪#nofilter‬ ‪#nophotoshop‬"

Ashley Tisdale posted this picture of herself to her Twitter account with the caption "Wet and wild" to which we say, "Definitely!"

Rihanna posted this image of her new tattoo on Instagram with the caption 'Goddess Isis- Complete Woman - Model for future generations- #GRANGRANDOLLY - always in and on my heart #1love' (Rihanna/Instargram)

Geraldo Rivera cause a stir on Twitter by posting a semi-nude photo of himself with the caption "70 is the new 50." (Geraldo Rivera/Twitter)